TABLE 2

Trends in the Prevalence of Abdominal Obesity Among US Youth Aged 2 to 19 Years: NHANES III (1988–1994) to NHANES 1999–2004

Age, yNHANES III (1988–1994)NHANES 1999–2000NHANES 2001–2002NHANES 2003–2004NHANES 1999–2004Absolute Difference, %aRelative Change, %bChange, PcTrends, Pd
N%SEN%SEN%SEN%SEN%SE
≥90th percentile of WC
    Boys
        2–19516810.50.9204515.51.5214617.10.7195919.41.6615017.40.86.965.4<.0001<.0001
        2–5208410.51.135820.54.239615.31.938722.42.3114119.41.78.984.0<.0001<.0001
        6–11162810.51.553912.02.758116.22.245316.32.2157314.91.44.442.0.0316.1103
        12–17113110.51.589115.61.687819.51.286118.91.6263018.10.97.672.9<.0001.0015
        18–1932510.63.425717.44.529115.32.925825.04.180619.22.28.681.4.0365.1766
    Girls
        2–19534210.50.8191017.10.9213217.81.7191618.51.6595817.80.97.369.4<.0001<.0001
        2–5217410.31.033712.02.140814.52.540813.52.2115313.41.33.130.5.0593.2487
        6–11158110.31.549816.62.158518.62.650821.71.8159119.01.38.683.4<.0001.0011
        12–17125211.01.283319.31.591617.01.975617.62.5250517.81.26.962.4.0001.0008
        18–1933510.32.424222.93.322325.44.624421.73.470923.22.213.0126.2.0001.0623
≥0.5 of WHtR
    Boys
        6–19308319.31.1168726.12.2174928.41.3157232.12.6500829.01.29.750.0<.0001<.0001
        6–11162719.91.653924.13.658126.92.145330.12.8157327.11.77.135.8.0026.0061
        12–17113118.71.889125.62.187728.41.986131.93.2262928.81.410.153.8<.0001.0006
        18–1932519.14.425734.54.729133.22.925838.94.280635.52.316.485.8.0014.0361
    Girls
        6–19316821.51.3157232.21.7172334.82.3150837.72.5480335.01.313.562.8<.0001<.0001
        6–11158117.01.549824.63.158529.23.150834.62.6159129.61.712.673.9<.0001<.0001
        12–17125224.21.983234.82.291536.82.975637.34.1250336.41.912.250.7<.0001.0003
        18–1933528.34.024249.04.122348.63.024448.44.970948.62.420.472.1<.0001.0017
  • a Difference between NHANES III (1988–1994) and NHANES 1999–2004.

  • b Relative change between NHANES III (1988–1994) and NHANES 1999–2004.

  • c Pooled t test for H0: population differences in the prevalence of abdominal obesity between NHANES III and NHANES 1999–2004 = 0; degree of freedom = 93 (49 for NHANES III + 44 for NHANES 1999–2004).

  • d Tests for linear trends in the prevalence of abdominal obesity were conducted in logistic regression models for concatenated data of the 4 surveys.